Longevity of various bacterial strains of intestinal origin in gas-free mineral water

Ducluzeau, R; Hudault, Sylvie; Galpin, J. V.

doi:10.1007/bf01385438

Cited by 22 publications

(12 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The absence of fecal indicators in samples where the pathogens were detected could be due to the fact that rapid inactivation of fecal indicators may occur in bottled water during storage. For example, Ducluzeau et al (1976) found that high numbers of E. coli ( i.e. , 10 5 –10 7 per mL) can disappear within four days, although, it has been reported that E. coli in bottled water may persist for 20 to 70 days (Burge and Hunter 1990; Obiri-Danso et al , 2003).…”

Section: Resultsmentioning

confidence: 99%

Fecal indicators and bacterial pathogens in bottled water from Dhaka, Bangladesh

Ahmed¹,

Yusuf²,

Hasan³

et al. 2013

Braz. J. Microbiol.

View full text Add to dashboard Cite

Forty-six bottled water samples representing 16 brands from Dhaka, Bangladesh were tested for the numbers of total coliforms, fecal indicator bacteria (i.e., thermotolerant Escherichia coli and Enterococcus spp.) and potential bacterial pathogens (i.e., Aeromonas hydrophila, Pseudomonas aeruginosa, Salmonella spp., and Shigella spp.). Among the 16 brands tested, 14 (86%), ten (63%) and seven (44%) were positive for total coliforms, E. coil and Enterococcus spp., respectively. Additionally, a further nine (56%), eight (50%), six (37%), and four (25%) brands were PCR positive for A. hydrophila lip, P. aeruginosa ETA, Salmonella spp. invA, and Shigella spp. ipaH genes, respectively. The numbers of bacterial pathogens in bottled water samples ranged from 28 ± 12 to 600 ± 45 (A. hydrophila lip gene), 180 ± 40 to 900 ± 200 (Salmonella spp. invA gene), 180 ± 40 to 1,300 ± 400 (P. aeruginosa ETA gene) genomic units per L of water. Shigella spp. ipaH gene was not quantifiable. Discrepancies were observed in terms of the occurrence of fecal indicators and bacterial pathogens. No correlations were observed between fecal indicators numbers and presence/absence of A. hydrophila lip (p = 0.245), Salmonella spp. invA (p = 0.433), Shigella spp. ipaH gene (p = 0.078), and P. aeruginosa ETA (p = 0.059) genes. Our results suggest that microbiological quality of bottled waters sold in Dhaka, Bangladesh is highly variable. To protect public health, stringent quality control is recommended for the bottled water industry in Bangladesh.

show abstract

Section: Resultsmentioning

confidence: 99%

Fecal indicators and bacterial pathogens in bottled water from Dhaka, Bangladesh

Ahmed¹,

Yusuf²,

Hasan³

et al. 2013

Braz. J. Microbiol.

View full text Add to dashboard Cite

show abstract

“…In a random survey of microbial quality of bottled water in South Africa, samples from 10 different brands of bottled water were tested over a period of 3 months duration and although total and faecal coliform were not detected, HPC showed a slight variation during the three-month period [21]. Other studies have shown that high counts of E.coli in bottled water could not be detected within four days [22]. The absence might be due to die-off in the bottles during storage.…”

Section: Discussionmentioning

confidence: 99%

Bacteriological quality of bottled water sold on the Ghanaian market

Addo¹,

Mensah²,

Donkor³

et al. 2009

African Journal of Food, Agriculture, Nutrition and Development

View full text Add to dashboard Cite

Consumption of bottled water is increasing rapidly in developing countries especially among the middle and high income earners as it is generally perceived to be pure, clean and of good quality. This has led to the sale of different brands of bottled water on the Ghanaian market. Although disease outbreaks due to contaminated bottled water are rare, any contamination may pose a unique hazard because of the widespread distribution. Bacteriological contamination of bottled water can occur through the bottling process or as a result of storage for long periods at room temperatures or higher. Since bottled water may be consumed by a wide range of people including the elderly, children and pregnant women, its safety must always be assured. The bacteriological quality of the current 7 brands of bottled water on the Ghanaian market was tested over a period of 10 weeks. Ten different batches of each brand was randomly selected and purchased from the market making a total of 70 samples. Sampling was done weekly in July-September 2007 and bacteriological examination conducted by multiple tube fermentation method to detect the presence of total coliforms, faecal coliforms and Escherichia coli. Results obtained were analyzed according to the World Health Organization (WHO) standards and guidelines for drinking water. Using the Most Probable Number (MPN) Index for various combination of positive and negative results, an MPN value of less than two (<2) total and faecal coliform were recorded for all the 70 samples of bottled water. The results showed that the bacteriological quality of the seven brands of bottled water samples analyzed was within the acceptable limits set by WHO guidelines and therefore safe for human consumption. However, more extensive surveillance of the bottled water industries and stringent regulations should be developed and enforced to ensure that the standards recorded in this study are maintained.

show abstract

“…Some studies have investigated how long enteric pathogens persist when deliberately inoculated into bottled waters. Ducluzeau et al (1976a) showed that even large inocula of E. coli (10' m1-l) disappeared within 4 d in one brand of gas-free mineral water. They also demonstrated that the addition of small amounts of faeces to the bottled mineral water greatly enhanced the survival of E. coli to several weeks.…”

Section: Indicator Organismsmentioning

confidence: 99%

The microbiology of bottled natural mineral waters

Hunter

1993

Journal of Applied Bacteriology

View full text Add to dashboard Cite

Longevity of various bacterial strains of intestinal origin in gas-free mineral water

Cited by 22 publications

References 11 publications

Fecal indicators and bacterial pathogens in bottled water from Dhaka, Bangladesh

Fecal indicators and bacterial pathogens in bottled water from Dhaka, Bangladesh

Bacteriological quality of bottled water sold on the Ghanaian market

The microbiology of bottled natural mineral waters

Contact Info

Product

Resources

About